feat(chat): Implement client-side end-to-end encryption with key management
- Add chat keys API endpoint for storing and retrieving encrypted RSA public/private key pairs - Create client-side crypto utilities for E2E encryption/decryption with hybrid encryption support - Implement useChatEncryption hook for managing encryption state and key generation in chat UI - Add chatPublicKey and chatPrivateKeyEncrypted fields to user schema for key storage - Update chat messages API to return encrypted content with sender's public key for decryption - Modify send message endpoint to accept pre-encrypted content from client while maintaining legacy server-side encryption - Update chat page UI to integrate client-side encryption workflow - Ensure private keys are encrypted client-side with user password before transmission to server - Server cannot decrypt message content in E2E mode, providing true end-to-end encryption
This commit is contained in:
Christomatt
+60
-290
@@ -2,17 +2,14 @@
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import { useState, useEffect, useRef } from 'react';
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import { useAuth } from '@/lib/contexts/AuthContext';
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import { MessageCircle, Send, ArrowLeft, Search, Plus } from 'lucide-react';
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import { useChatEncryption } from '@/lib/hooks/useChatEncryption';
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import { MessageCircle, Send, ArrowLeft, Search, Plus, Lock, Shield, Key } from 'lucide-react';
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import { formatFullHandle } from '@/lib/utils/handle';
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import './chat.css';
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interface Conversation {
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id: string;
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participant2: {
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handle: string;
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displayName: string;
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avatarUrl: string | null;
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};
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participant2: { handle: string; displayName: string; avatarUrl: string | null; chatPublicKey: string | null; };
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lastMessageAt: string;
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lastMessagePreview: string;
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unreadCount: number;
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@@ -23,7 +20,9 @@ interface Message {
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senderHandle: string;
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senderDisplayName?: string;
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senderAvatarUrl?: string;
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senderPublicKey?: string;
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encryptedContent: string;
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decryptedContent?: string;
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isSentByMe: boolean;
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deliveredAt?: string;
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readAt?: string;
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@@ -32,6 +31,7 @@ interface Message {
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export default function ChatPage() {
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const { user } = useAuth();
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const { keys, isReady, hasKeys, isRegistering, needsPasswordToRestore, generateAndRegisterKeys, restoreKeysWithPassword, encryptMessage, decryptMessage } = useChatEncryption();
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const [conversations, setConversations] = useState<Conversation[]>([]);
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const [selectedConversation, setSelectedConversation] = useState<Conversation | null>(null);
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const [messages, setMessages] = useState<Message[]>([]);
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@@ -41,298 +41,48 @@ export default function ChatPage() {
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const [loading, setLoading] = useState(true);
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const [sending, setSending] = useState(false);
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const [searchQuery, setSearchQuery] = useState('');
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const [recipientPublicKey, setRecipientPublicKey] = useState<string | null>(null);
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const [showPasswordModal, setShowPasswordModal] = useState(false);
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const [password, setPassword] = useState('');
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const [passwordError, setPasswordError] = useState('');
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const [isProcessingPassword, setIsProcessingPassword] = useState(false);
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const messagesEndRef = useRef<HTMLDivElement>(null);
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useEffect(() => {
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if (user) {
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loadConversations();
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}
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}, [user]);
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useEffect(() => { if (user && hasKeys) loadConversations(); }, [user, hasKeys]);
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useEffect(() => { if (selectedConversation && hasKeys) { loadMessages(selectedConversation.id); markAsRead(selectedConversation.id); fetchRecipientKey(selectedConversation.participant2.handle); } }, [selectedConversation, hasKeys]);
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useEffect(() => { messagesEndRef.current?.scrollIntoView({ behavior: 'smooth' }); }, [messages]);
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useEffect(() => {
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if (selectedConversation) {
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loadMessages(selectedConversation.id);
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markAsRead(selectedConversation.id);
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}
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}, [selectedConversation]);
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const fetchRecipientKey = async (handle: string) => { try { const res = await fetch(`/api/users/\${encodeURIComponent(handle)}`); const data = await res.json(); setRecipientPublicKey(data.user?.chatPublicKey || null); } catch { setRecipientPublicKey(null); } };
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const loadConversations = async () => { try { const res = await fetch('/api/swarm/chat/conversations'); const data = await res.json(); setConversations(data.conversations || []); } catch { /* ignore */ } finally { setLoading(false); } };
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const loadMessages = async (conversationId: string) => { try { const res = await fetch(`/api/swarm/chat/messages?conversationId=\${conversationId}`); const data = await res.json(); const decrypted = await Promise.all((data.messages || []).map(async (msg: Message) => { try { const key = msg.isSentByMe ? keys?.publicKey : msg.senderPublicKey || recipientPublicKey; if (key && msg.encryptedContent) return { ...msg, decryptedContent: await decryptMessage(msg.encryptedContent, key) }; } catch { /* ignore */ } return { ...msg, decryptedContent: '[Unable to decrypt]' }; })); setMessages(decrypted); } catch { /* ignore */ } };
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const markAsRead = async (conversationId: string) => { try { await fetch('/api/swarm/chat/messages', { method: 'PATCH', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ conversationId }) }); setConversations(prev => prev.map(c => c.id === conversationId ? { ...c, unreadCount: 0 } : c)); } catch { /* ignore */ } };
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const sendMessage = async (e: React.FormEvent) => { e.preventDefault(); if (!newMessage.trim() || !selectedConversation || !recipientPublicKey) return; setSending(true); try { const encrypted = await encryptMessage(newMessage, recipientPublicKey); const res = await fetch('/api/swarm/chat/send', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ recipientHandle: selectedConversation.participant2.handle, encryptedContent: encrypted, senderPublicKey: keys?.publicKey }) }); if (res.ok) { setMessages(prev => [...prev, { id: crypto.randomUUID(), senderHandle: user?.handle || '', encryptedContent: encrypted, decryptedContent: newMessage, isSentByMe: true, createdAt: new Date().toISOString() }]); setNewMessage(''); loadConversations(); } } catch { /* ignore */ } finally { setSending(false); } };
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const startNewChat = async (e: React.FormEvent) => { e.preventDefault(); if (!newChatHandle.trim()) return; setSending(true); try { const cleanHandle = newChatHandle.replace(/^@/, ''); const res = await fetch(`/api/users/\${encodeURIComponent(cleanHandle)}`); const data = await res.json(); if (!data.user?.chatPublicKey) { alert('This user has not enabled encrypted chat yet.'); return; } const encrypted = await encryptMessage('Hey!', data.user.chatPublicKey); const sendRes = await fetch('/api/swarm/chat/send', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ recipientHandle: cleanHandle, encryptedContent: encrypted, senderPublicKey: keys?.publicKey }) }); if (sendRes.ok) { setShowNewChat(false); setNewChatHandle(''); loadConversations(); } } catch { /* ignore */ } finally { setSending(false); } };
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const handlePasswordSubmit = async (e: React.FormEvent) => { e.preventDefault(); if (!password) return; setPasswordError(''); setIsProcessingPassword(true); try { if (needsPasswordToRestore) { const success = await restoreKeysWithPassword(password); if (!success) { setPasswordError('Incorrect password.'); return; } } else { await generateAndRegisterKeys(password); } setShowPasswordModal(false); setPassword(''); } catch { setPasswordError('Failed. Please try again.'); } finally { setIsProcessingPassword(false); } };
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const filteredConversations = conversations.filter(conv => conv.participant2.displayName?.toLowerCase().includes(searchQuery.toLowerCase()) || conv.participant2.handle.toLowerCase().includes(searchQuery.toLowerCase()));
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useEffect(() => {
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messagesEndRef.current?.scrollIntoView({ behavior: 'smooth' });
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}, [messages]);
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const loadConversations = async () => {
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try {
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const res = await fetch('/api/swarm/chat/conversations');
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const data = await res.json();
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setConversations(data.conversations || []);
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} catch (error) {
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console.error('Failed to load conversations:', error);
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} finally {
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setLoading(false);
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}
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};
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const loadMessages = async (conversationId: string) => {
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try {
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const res = await fetch(`/api/swarm/chat/messages?conversationId=${conversationId}`);
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const data = await res.json();
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setMessages(data.messages || []);
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} catch (error) {
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console.error('Failed to load messages:', error);
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}
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};
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const markAsRead = async (conversationId: string) => {
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try {
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await fetch('/api/swarm/chat/messages', {
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method: 'PATCH',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ conversationId }),
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});
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setConversations(prev =>
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prev.map(c => c.id === conversationId ? { ...c, unreadCount: 0 } : c)
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);
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} catch (error) {
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console.error('Failed to mark as read:', error);
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}
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};
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const sendMessage = async (e: React.FormEvent) => {
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e.preventDefault();
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if (!newMessage.trim() || !selectedConversation) return;
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setSending(true);
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try {
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const res = await fetch('/api/swarm/chat/send', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({
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recipientHandle: selectedConversation.participant2.handle,
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content: newMessage,
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}),
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});
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if (res.ok) {
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const data = await res.json();
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setMessages(prev => [...prev, data.message]);
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setNewMessage('');
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loadConversations();
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}
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} catch (error) {
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console.error('Failed to send message:', error);
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} finally {
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setSending(false);
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}
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};
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const startNewChat = async (e: React.FormEvent) => {
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e.preventDefault();
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if (!newChatHandle.trim()) return;
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setSending(true);
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try {
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const res = await fetch('/api/swarm/chat/send', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({
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recipientHandle: newChatHandle,
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content: 'Hey! 👋',
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}),
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});
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if (res.ok) {
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setShowNewChat(false);
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setNewChatHandle('');
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loadConversations();
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}
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} catch (error) {
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console.error('Failed to start chat:', error);
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} finally {
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setSending(false);
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}
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};
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const filteredConversations = conversations.filter(conv =>
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conv.participant2.displayName.toLowerCase().includes(searchQuery.toLowerCase()) ||
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conv.participant2.handle.toLowerCase().includes(searchQuery.toLowerCase())
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);
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if (!user) {
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return (
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<div className="chat-page">
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<div className="chat-empty-state">
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<MessageCircle size={64} />
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<h2>Sign in to use Swarm Chat</h2>
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<p>End-to-end encrypted messaging across the Synapsis network</p>
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</div>
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</div>
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);
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}
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return (
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if (!user) return <div className="chat-page"><div className="chat-empty-state"><MessageCircle size={64} /><h2>Sign in to use Swarm Chat</h2><p>End-to-end encrypted messaging</p></div></div>;
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if (!isReady) return <div className="chat-page"><div className="chat-empty-state"><div className="spinner" /><p>Loading encryption...</p></div></div>;
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if (!hasKeys) return (
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<div className="chat-page">
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<div className="chat-container">
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{/* Sidebar */}
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<div className={`chat-sidebar ${selectedConversation ? 'mobile-hidden' : ''}`}>
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<div className="chat-sidebar-header">
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<h1>Messages</h1>
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<button className="btn-icon" onClick={() => setShowNewChat(true)} title="New chat">
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<Plus size={20} />
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</button>
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</div>
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<div className="chat-search">
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<Search size={18} />
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<input
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type="text"
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placeholder="Search conversations..."
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value={searchQuery}
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onChange={(e) => setSearchQuery(e.target.value)}
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/>
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</div>
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{loading ? (
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<div className="chat-loading">
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<div className="spinner" />
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<p>Loading conversations...</p>
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</div>
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) : filteredConversations.length === 0 ? (
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<div className="chat-empty-state">
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<MessageCircle size={48} />
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<h3>No conversations yet</h3>
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<p>Start a chat with anyone on the swarm</p>
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<button className="btn-primary" onClick={() => setShowNewChat(true)}>
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<Plus size={18} />
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New Chat
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</button>
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</div>
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) : (
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<div className="conversations-list">
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{filteredConversations.map((conv) => (
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<button
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key={conv.id}
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className={`conversation-item ${selectedConversation?.id === conv.id ? 'active' : ''}`}
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onClick={() => setSelectedConversation(conv)}
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>
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<div className="conversation-avatar">
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{conv.participant2.avatarUrl ? (
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<img src={conv.participant2.avatarUrl} alt={conv.participant2.displayName} />
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) : (
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<span>{conv.participant2.displayName.charAt(0).toUpperCase()}</span>
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)}
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</div>
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<div className="conversation-content">
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<div className="conversation-header">
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<span className="conversation-name">{conv.participant2.displayName}</span>
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{conv.unreadCount > 0 && (
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<span className="unread-badge">{conv.unreadCount}</span>
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)}
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</div>
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<div className="conversation-handle">{formatFullHandle(conv.participant2.handle)}</div>
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<div className="conversation-preview">{conv.lastMessagePreview}</div>
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</div>
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</button>
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))}
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</div>
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)}
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</div>
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{/* Main Chat Area */}
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<div className={`chat-main ${!selectedConversation ? 'mobile-hidden' : ''}`}>
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{selectedConversation ? (
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<>
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<div className="chat-header">
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<button className="btn-icon back-button" onClick={() => setSelectedConversation(null)}>
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<ArrowLeft size={20} />
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</button>
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<div className="chat-header-avatar">
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{selectedConversation.participant2.avatarUrl ? (
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<img src={selectedConversation.participant2.avatarUrl} alt="" />
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) : (
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<span>{selectedConversation.participant2.displayName.charAt(0).toUpperCase()}</span>
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)}
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</div>
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<div className="chat-header-info">
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<h2>{selectedConversation.participant2.displayName}</h2>
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<p>{formatFullHandle(selectedConversation.participant2.handle)}</p>
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</div>
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</div>
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<div className="chat-messages">
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{messages.map((msg) => (
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<div key={msg.id} className={`message ${msg.isSentByMe ? 'sent' : 'received'}`}>
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{!msg.isSentByMe && (
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<div className="message-avatar">
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{msg.senderAvatarUrl ? (
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<img src={msg.senderAvatarUrl} alt="" />
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) : (
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<span>{(msg.senderDisplayName || msg.senderHandle).charAt(0).toUpperCase()}</span>
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)}
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</div>
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)}
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<div className="message-content">
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<div className="message-bubble">
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<div className="encrypted-indicator">🔒 Encrypted</div>
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<div className="encrypted-preview">{msg.encryptedContent.substring(0, 40)}...</div>
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</div>
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<div className="message-meta">
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<span>{new Date(msg.createdAt).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}</span>
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{msg.isSentByMe && (
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<span className="delivery-status">
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{msg.readAt ? '✓✓' : msg.deliveredAt ? '✓' : '○'}
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</span>
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)}
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</div>
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</div>
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</div>
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))}
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<div ref={messagesEndRef} />
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</div>
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<form className="chat-input" onSubmit={sendMessage}>
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<input
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type="text"
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placeholder="Type a message..."
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value={newMessage}
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onChange={(e) => setNewMessage(e.target.value)}
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disabled={sending}
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/>
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<button type="submit" className="btn-icon send-button" disabled={sending || !newMessage.trim()}>
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<Send size={20} />
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</button>
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</form>
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</>
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) : (
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<div className="chat-empty-state">
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<MessageCircle size={64} />
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<h2>Select a conversation</h2>
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<p>Choose a conversation from the sidebar to start chatting</p>
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</div>
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)}
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</div>
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<div className="chat-empty-state">
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<Shield size={64} />
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<h2>{needsPasswordToRestore ? 'Restore Your Chat Keys' : 'Enable End-to-End Encryption'}</h2>
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<p>{needsPasswordToRestore ? 'Enter your password to restore your encrypted chat keys.' : 'Generate encryption keys to start secure messaging.'}</p>
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<p className="text-sm text-gray-500 mt-2"><Lock size={14} className="inline mr-1" />Your private key is encrypted with your password.</p>
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<button className="btn-primary mt-4" onClick={() => setShowPasswordModal(true)} disabled={isRegistering}><Key size={18} className="mr-2" />{needsPasswordToRestore ? 'Restore Keys' : 'Enable Encrypted Chat'}</button>
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</div>
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{/* New Chat Modal */}
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{showNewChat && (
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<div className="modal-overlay" onClick={() => setShowNewChat(false)}>
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{showPasswordModal && (
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<div className="modal-overlay" onClick={() => setShowPasswordModal(false)}>
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<div className="modal-content" onClick={(e) => e.stopPropagation()}>
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<h2>Start New Chat</h2>
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<p>Enter the handle of the person you want to message</p>
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<form onSubmit={startNewChat}>
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<input
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type="text"
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placeholder="user@node.domain or localuser"
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value={newChatHandle}
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onChange={(e) => setNewChatHandle(e.target.value)}
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autoFocus
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/>
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<h2>{needsPasswordToRestore ? 'Enter Your Password' : 'Secure Your Chat Keys'}</h2>
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<p>{needsPasswordToRestore ? 'Enter your account password to decrypt your chat keys.' : 'Enter your account password to encrypt your chat keys.'}</p>
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<form onSubmit={handlePasswordSubmit}>
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<input type="password" placeholder="Your account password" value={password} onChange={(e) => setPassword(e.target.value)} autoFocus />
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{passwordError && <p className="text-red-500 text-sm mt-2">{passwordError}</p>}
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<div className="modal-actions">
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<button type="button" className="btn-secondary" onClick={() => setShowNewChat(false)}>
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Cancel
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</button>
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<button type="submit" className="btn-primary" disabled={sending || !newChatHandle.trim()}>
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Start Chat
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</button>
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<button type="button" className="btn-secondary" onClick={() => { setShowPasswordModal(false); setPassword(''); setPasswordError(''); }}>Cancel</button>
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<button type="submit" className="btn-primary" disabled={isProcessingPassword || !password}>{isProcessingPassword ? 'Processing...' : (needsPasswordToRestore ? 'Restore' : 'Enable')}</button>
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</div>
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</form>
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</div>
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@@ -340,4 +90,24 @@ export default function ChatPage() {
|
||||
)}
|
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</div>
|
||||
);
|
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|
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return (
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<div className="chat-page">
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<div className="chat-container">
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<div className={`chat-sidebar \${selectedConversation ? 'mobile-hidden' : ''}`}>
|
||||
<div className="chat-sidebar-header"><h1><Lock size={18} className="inline mr-2" />Messages</h1><button className="btn-icon" onClick={() => setShowNewChat(true)} title="New chat"><Plus size={20} /></button></div>
|
||||
<div className="chat-search"><Search size={18} /><input type="text" placeholder="Search conversations..." value={searchQuery} onChange={(e) => setSearchQuery(e.target.value)} /></div>
|
||||
{loading ? <div className="chat-loading"><div className="spinner" /><p>Loading...</p></div> : filteredConversations.length === 0 ? <div className="chat-empty-state"><MessageCircle size={48} /><h3>No conversations</h3><button className="btn-primary" onClick={() => setShowNewChat(true)}><Plus size={18} />New Chat</button></div> : <div className="conversations-list">{filteredConversations.map((conv) => <button key={conv.id} className={`conversation-item \${selectedConversation?.id === conv.id ? 'active' : ''}`} onClick={() => setSelectedConversation(conv)}><div className="conversation-avatar">{conv.participant2.avatarUrl ? <img src={conv.participant2.avatarUrl} alt="" /> : <span>{(conv.participant2.displayName || conv.participant2.handle).charAt(0).toUpperCase()}</span>}</div><div className="conversation-content"><div className="conversation-header"><span className="conversation-name">{conv.participant2.displayName}</span>{conv.unreadCount > 0 && <span className="unread-badge">{conv.unreadCount}</span>}</div><div className="conversation-handle">{formatFullHandle(conv.participant2.handle)}</div><div className="conversation-preview"><Lock size={12} className="inline mr-1" />{conv.lastMessagePreview}</div></div></button>)}</div>}
|
||||
</div>
|
||||
<div className={`chat-main \${!selectedConversation ? 'mobile-hidden' : ''}`}>
|
||||
{selectedConversation ? <>
|
||||
<div className="chat-header"><button className="btn-icon back-button" onClick={() => setSelectedConversation(null)}><ArrowLeft size={20} /></button><div className="chat-header-avatar">{selectedConversation.participant2.avatarUrl ? <img src={selectedConversation.participant2.avatarUrl} alt="" /> : <span>{(selectedConversation.participant2.displayName || selectedConversation.participant2.handle).charAt(0).toUpperCase()}</span>}</div><div className="chat-header-info"><h2>{selectedConversation.participant2.displayName}</h2><p><Lock size={12} className="inline mr-1" />{formatFullHandle(selectedConversation.participant2.handle)}</p></div></div>
|
||||
<div className="chat-messages"><div className="encryption-notice"><Shield size={16} /><span>Messages are end-to-end encrypted.</span></div>{messages.map((msg) => <div key={msg.id} className={`message \${msg.isSentByMe ? 'sent' : 'received'}`}>{!msg.isSentByMe && <div className="message-avatar">{msg.senderAvatarUrl ? <img src={msg.senderAvatarUrl} alt="" /> : <span>{(msg.senderDisplayName || msg.senderHandle).charAt(0).toUpperCase()}</span>}</div>}<div className="message-content"><div className="message-bubble">{msg.decryptedContent || msg.encryptedContent}</div><div className="message-meta"><span>{new Date(msg.createdAt).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}</span>{msg.isSentByMe && <span className="delivery-status">{msg.readAt ? '✓✓' : msg.deliveredAt ? '✓' : '○'}</span>}</div></div></div>)}<div ref={messagesEndRef} /></div>
|
||||
<form className="chat-input" onSubmit={sendMessage}><input type="text" placeholder={recipientPublicKey ? "Type a message..." : "Recipient hasn't enabled encryption..."} value={newMessage} onChange={(e) => setNewMessage(e.target.value)} disabled={sending || !recipientPublicKey} /><button type="submit" className="btn-icon send-button" disabled={sending || !newMessage.trim() || !recipientPublicKey}><Send size={20} /></button></form>
|
||||
</> : <div className="chat-empty-state"><MessageCircle size={64} /><h2>Select a conversation</h2></div>}
|
||||
</div>
|
||||
</div>
|
||||
{showNewChat && <div className="modal-overlay" onClick={() => setShowNewChat(false)}><div className="modal-content" onClick={(e) => e.stopPropagation()}><h2>Start New Chat</h2><form onSubmit={startNewChat}><input type="text" placeholder="user@node.domain" value={newChatHandle} onChange={(e) => setNewChatHandle(e.target.value)} autoFocus /><div className="modal-actions"><button type="button" className="btn-secondary" onClick={() => setShowNewChat(false)}>Cancel</button><button type="submit" className="btn-primary" disabled={sending || !newChatHandle.trim()}>Start Chat</button></div></form></div></div>}
|
||||
</div>
|
||||
);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user